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jQuery

在本站前面有文章介绍了如何实现发表微博说说:PHP+Mysql+jQuery实现发布微博程序--jQuery篇,本例将基于其数据库结构,用动态的方式展示发表的说说信息。

查看示例:DEMO

XHTML
复制代码 代码如下:


demo

Shuro
8分钟前
说:


评论内容。。。



...


上述HTML结构由N个.saylist构成,用于展示用户的评论信息,当然在本例中,将由PHP负责生成这段XHTML代码。
CSS
复制代码 代码如下:
#demo{width:400px; height:80px; margin:80px auto; border-bottom:1px dotted #d3d3d3}
.saylist{margin:8px auto; height:80px; padding:4px 0;}
.saylist img{float:left; width:50px; margin:4px}
.saytxt{float:right; width:320px; overflow:hidden}
.saytxt p{line-height:18px}
.saytxt p strong{margin-right:6px}
.saytxt p span{color:#999}
.say{margin-top:3px; font-size:14px; font-weight:bold}

使用上述CSS渲染HTML外观,当然你也可以自己定制你喜欢的外观样式。
PHP
在function.php中有两个函数,formatSay()用来输出用户评论列表,即输出上文中的HTML。
复制代码 代码如下:
function formatSay($say,$dt,$uid){
$say=htmlspecialchars(stripslashes($say));
return'
PHP+Mysql+jQuery实现动态展示信息_PHP style="max-width:90%" alt="demo" />

demo_'.$uid.' '.tranTime($dt).' 说:

'.$say.'



';
}

时间轴函数tranTime()将时间转换成如“1小时前”的格式,详情可阅读本站文章:PHP实现时间轴函数
复制代码 代码如下:
function tranTime($stime) {
$rtime = date("m-d H:i",$stime);
$htime = date("H:i",$stime);
$day_time = date("j",$stime);
$today=date("j",time());
$ds = $today - $day_time;
$time = time() - $stime;
if ($time $str = '刚刚';
}
elseif ($time $min = floor($time/60);
$str = $min.'分钟前';
}
elseif ($time $h = floor($time/(60*60));
$str = $h.'小时前 '.$htime;
if($ds==1)
$str = '昨天 '.$rtime;
}
elseif ($time $str = '昨天 '.$rtime;
if($ds==2)
$str = '前天 '.$rtime;
}elseif($time $str = '前天 '.$rtime;
if($ds>2)
$str = $rtime;
}
else {
$str = $rtime;
}
return $str;
}

然后在index.php中调用funciton.php,并连接MySQL数据库输出评论列表。
复制代码 代码如下:
require_once('connect.php'); //连接数据库文件
require_once('function.php'); //函数文件
$query=mysql_query("select * from say order by id desc limit 0,15");
while ($row=mysql_fetch_array($query)) {
$sayList.=formatSay($row[content],$row[addtime],$row[userid]);
}

在div#demo中输出评论列表。
复制代码 代码如下:




这样一来,运行index.php会出现一个列表,我们只需要一条一条展示,下面就需要jQuery来办了。
jQuery
复制代码 代码如下:
$(function(){
//除了显示第一个saylist,其他的都隐藏
$(".saylist").hide().eq(0).show();
//自循环函数,循环展示信息
(function showNextSay(){
//每条信息展示7.5秒
$(".saylist:visible").delay(7500).fadeOut("slow",function(){
$(this).appendTo("#demo");
//展示下一条
$(".saylist:first").fadeIn("slow",function(){
//再次调用函数
showNextSay();
});
});
})();
});
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